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Diffstat (limited to 'devel/flex/DESCR')
| -rw-r--r-- | devel/flex/DESCR | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/devel/flex/DESCR b/devel/flex/DESCR new file mode 100644 index 00000000000..f2e2c905235 --- /dev/null +++ b/devel/flex/DESCR @@ -0,0 +1,10 @@ +flex is a tool for generating scanners: programs which recognized +lexical patterns in text. flex reads the given input files, or its +standard input if no file names are given, for a description of a +scanner to generate. The description is in the form of pairs of +regular expressions and C code, called rules. flex generates as +output a C source file, lex.yy.c, which defines a routine yylex(). +This file is compiled and linked with the -lfl library to produce an +executable. When the executable is run, it analyzes its input for +occurrences of the regular expressions. Whenever it finds one, it +executes the corresponding C code. |